import JavaScriptKit extension UInt64: JavaScriptKit.ConvertibleToJSValue, JavaScriptKit.TypedArrayElement { public static var typedArrayClass: JSFunction { JSObject.global.BigUint64Array.function! } public var jsValue: JSValue { .bigInt(JSBigInt(unsigned: self)) } } extension Int64: JavaScriptKit.ConvertibleToJSValue, JavaScriptKit.TypedArrayElement { public static var typedArrayClass: JSFunction { JSObject.global.BigInt64Array.function! } public var jsValue: JSValue { .bigInt(JSBigInt(self)) } }